{"instruction": "You are an expert in event argument extraction. Please extract event arguments and their roles from the input that conform to the schema definition, which already includes event trigger words. If an argument does not exist, return NAN or an empty dictionary. Please respond in the format of a JSON string.", "schema": [{"event_type": "potential therapeutic event", "arguments": ["Subject.Gender", "Treatment.Drug", "Treatment.Dosage", "Treatment.Disorder", "Treatment.Time_elapsed", "Effect", "Subject.Population", "Subject.Race", "Subject.Disorder", "Treatment.Duration", "Treatment.Route", "Treatment.Freq", "Subject.Age", "Treatment"]}], "input": "Although transient increases in ectopy after bretylium therapy have been described, presumably due to catecholamine release, the occurrence of life-threatening ventricular arrhythmia leading to cardiac arrest has not previously been emphasized."}
{"potential therapeutic event": []}